Atomic geometry determination of FeO(0 0 1) grown on Ag(0 0 1) by low energy electron diffraction

A low energy electron diffraction (LEED) investigation of the structure of the surface of an FeO(0 0 1) thin film grown on Ag(0 0 1) is presented. The results show that this surface has an almost bulk termination structure with a very small rumple on the first layer, which agrees with the structure found in other studies carried out on the (0 0 1) surface of oxides that have rock-salt structure. Evidences that may support a linear behaviour of the topmost layer rumple with the oxide lattice constant are also discussed.